Headline

Engineering Leader | Building Platforms That Scale Revenue | Ad-Tech · Fintech · AI-Native Products | $100M+ Product Outcomes

About

Engineering Leader with 12+ years architecting and delivering distributed systems at scale. Built production systems handling 5,000+ QPS at sub-80ms p99 latency, drove platforms generating $100M+ in revenue, and led teams shipping AI-native products from whiteboard to production. My work centers on high-throughput, low-latency architectures — ad-serving engines, event-driven platforms, experimentation infrastructure, and AI systems across ad-tech, fintech, e-commerce, and logistics. - Driving architectural standards across distributed systems, platform strategy, and AI adoption. - Hiring and building high-performing engineering teams from the ground up. - Aligning product and data organizations to drive experimentation-driven delivery and technical roadmap alignment. - Architected real-time ad serving platform, 5,000 QPS, sub-80ms p99. Multi-DSP bidding, inventory generation, A/B test harness. $100M+ monetization by year 2. - Built RAG-based agentic AI system, fine-tuned pre-trained LLM models on domain data, built retrieval and inference pipelines, delivered autonomous execution loop for small business digital presence optimization. - AI/ML Infrastructure — Explored LLM fine-tuning on domain-specific datasets, built embedding pipelines, vector store optimization, and model evaluation frameworks for production AI feasibility assessment. - Driving technical leadership for microservices, API contracts, and observability. Hired and scaled teams, mentored engineers through system design reviews, established incident response protocols. Partnered with product and data teams to define experimentation-led development patterns.

Location

Bengaluru

AI stack

claude code

deepseek

geminicli

openai

opencode

Work experience

Principal Engineer / Engineering Manager at Vista, Jun 2023 - Present · 3 yrs 4 mos, Bangalore Urban, At Vista, I have led three cross-functional engineering teams building digital marketing platforms for small business customers. I owned platform strategy and execution, including the development of a centralized Placement Engine that enabled experimentation-led delivery and scalable campaign execution. Following this, I transitioned into a purely technical leadership role, leading the Digital Partnerships initiative at Vista. In this role, I focused on building platform integrations and technical capabilities to enable more holistic, digitally focused marketing assistance for customers through partner-driven solutions. More recently, I led the design and development of an AI-powered Customer Digital Advisor — a RAG-based system built on a fine-tuned Ollama model that autonomously analyses gaps in a customer's digital presence and generates and executes a tailored improvement plan. I also built a PoC for domain-specific LLM fine-tuning, exploring embedding pipelines, vector stores, and model evaluation to assess production feasibility.

Engineering Manager at GoodWorker, Aug 2022 - Mar 2023 · 8 mos, Bengaluru, Building platform applications and libraries for Goodworker, including Authentication and Authorisation systems, standardisation of technical components across the organisation, standardisation of infrastructure and architectural patterns.

Engineering Lead at Lowe's India, Oct 2020 - Aug 2022 · 1 yr 11 mos, Bengaluru, KA, India, Development of Lowes One Roof Media Network Platform handling all monetisation needs for the Lowes website and stores. Designed and developed the inhouse ad serving platform for Lowes with high volume and low latency SLAs.

SDE-II at Amazon, May 2020 - Oct 2020 · 6 mos, Bengaluru, Karnataka

Senior Software Developer at Cleartrip.com, Sep 2018 - May 2020 · 1 yr 9 mos, Bangalore, Backend developer at cleartrip hotels and activities. Responsible for design and development of Visa product and redesign of hotel search system.

Education

Btech, Computer Science, West Bengal University of Technology, Kolkata

Bachelor of Technology, Computer Engineering, West Bengal University of Technology, Kolkata

Public links

github: https://github.com/aviseksengupta